fst::UnionFst< A > Class Template Reference

#include <fst/union.h>

Inherits fst::RationalFst< A >.

Collaboration diagram for fst::UnionFst< A >:

List of all members.

Public Types
typedef A	Arc
typedef A::Weight	Weight
typedef A::StateId	StateId
Public Member Functions
	UnionFst (const Fst< A > &fst1, const Fst< A > &fst2)
	UnionFst (const Fst< A > &fst1, const Fst< A > &fst2, const UnionFstOptions &opts)
	UnionFst (const UnionFst< A > &fst, bool safe=false)
	See Fst<>::Copy() for doc.
virtual UnionFst< A > *	Copy (bool safe=false) const
	Get a copy of this UnionFst. See Fst<>::Copy() for further doc.

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Detailed Description

template<class A>
class fst::UnionFst< A >

Computes the union (sum) of two FSTs. This version is a delayed Fst. If A transduces string x to y with weight a and B transduces string w to v with weight b, then their union transduces x to y with weight a and w to v with weight b.

Complexity:

• Time: O(v1 + e1 + v2 + e2)
• Sapce: O(v1 + v2) where vi = # of states visited and ei = # of arcs visited of the ith FST. Constant time and space to visit an input state or arc is assumed and exclusive of caching.

Definition at line 112 of file union.h.

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Member Typedef Documentation

template<class A>

typedef A fst::UnionFst< A >::Arc

Reimplemented from fst::RationalFst< A >.

Definition at line 116 of file union.h.

template<class A>

typedef A::StateId fst::UnionFst< A >::StateId

Reimplemented from fst::RationalFst< A >.

Definition at line 118 of file union.h.

template<class A>

typedef A::Weight fst::UnionFst< A >::Weight

Reimplemented from fst::ImplToFst< RationalFstImpl< A > >.

Definition at line 117 of file union.h.

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Constructor & Destructor Documentation

template<class A>

fst::UnionFst< A >::UnionFst	(	const Fst< A > &	fst1,
		const Fst< A > &	fst2
	)			[inline]

Definition at line 120 of file union.h.

template<class A>

fst::UnionFst< A >::UnionFst	(	const Fst< A > &	fst1,
		const Fst< A > &	fst2,
		const UnionFstOptions &	opts
	)			[inline]

Definition at line 124 of file union.h.

template<class A>

fst::UnionFst< A >::UnionFst	(	const UnionFst< A > &	fst,
		bool	safe = false
	)			[inline]

See Fst<>::Copy() for doc.

Definition at line 130 of file union.h.

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Member Function Documentation

template<class A>

virtual UnionFst<A>* fst::UnionFst< A >::Copy

(

bool

safe = false

)

const [inline, virtual]

Get a copy of this UnionFst. See Fst<>::Copy() for further doc.

Implements fst::Fst< typename RationalFstImpl< A >::Arc >.

Definition at line 134 of file union.h.

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The documentation for this class was generated from the following file:

• openfst-1.2.6/src/include/fst/union.h